1. Department of Immunology, School of Medicine, Nankai University, Tianjin 300071, P.R. China
2. Department of Pathophysiology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin 300070, P.R. China
3. Department of Experimental Facility, State Key Laboratory of Medical Chemical Biology, Tianjin 300071, P.R. China
4. Technical Center for Safety of Industrial Products, Tianjin Entry‑Exit Inspection and Quarantine Bureau, Tianjin 300308, P.R. China